:root{--color-bg: #f6f5f1;--color-surface: #ffffff;--color-surface-2: #efeee8;--color-border: #d8d6cd;--color-text: #23221e;--color-text-muted: #69665f;--color-primary: #2566d4;--color-primary-hover:#1e56b5;--color-accent: #0f3c8a;--color-accent-hover: #0b2f6b;--color-on-primary: #ffffff;--color-navy-900: #001433;--color-navy-800: #001e52;--color-blue-bright: #5599ff;--color-on-dark: #e8eaf0;--color-on-dark-bright: #eff5ff;--color-on-dark-muted: #9baecc;--color-on-dark-faint: #7f96b6;--color-on-dark-label: #9bb8e6;--color-on-dark-accent: #7ab3ff;--color-on-dark-link: #c9dcff;--color-on-dark-link-hover: #eff5ff;--color-on-dark-tag: #d3e4ff;--color-on-dark-warm: #ffe2a3;--color-white: #ffffff;--color-positive: #2f6b4e;--color-error: #a63d2f;--header-bg: var(--color-navy-900);--header-fg: var(--color-on-dark);--header-fg-muted: #9ba3bf;--header-height: 64px;--hero-bg-from: var(--color-navy-900);--hero-bg-to: #002266;--hero-bg-mid: #002060;--hero-eyebrow: #7a9fd4;--page-hero-overlay: linear-gradient(180deg, rgba(0, 20, 51, .98), rgba(0, 30, 82, .94));--hero-panel-muted: #a8c0e5;--playground-bg: #0c1a32;--playground-text: var(--color-on-dark);--playground-desc: #7a8caa;--playground-canvas-bg: #060a14;--playground-btn-hover-fg: #c9dcff;--playground-btn-active-fg: #e8f0ff;--playground-badge-fg: #dbe9ff;--playground-copy-fg: #dbe9ff;--playground-release-fg: #86a1c6;--playground-variant-fg: #92a8c8;--playground-variant-hover-fg: #dbe9ff;--playground-pill-fg: #dbe9ff;--playground-glyph-fill: #dbe9ff;--playground-particle: var(--color-blue-bright);--debug-handle-fg: #dfe8f7;--debug-handle-fg-active: #f4f8ff;--debug-handle-text: #e7eef9;--debug-handle-label: #89a6cb;--debug-handle-current: #f4f8ff;--debug-drawer-fg: #eff5ff;--debug-drawer-current: #a9c7f4;--debug-drawer-close: #dbe9ff;--debug-drawer-section-label: #9baecc;--debug-drawer-policy-label: #8fa5c7;--debug-drawer-status-label: #8aa0c2;--debug-drawer-btn-fg: #a5b5cd;--debug-drawer-btn-hover-fg: #dbe9ff;--debug-drawer-btn-active-fg: var(--debug-handle-current);--debug-drawer-restart-fg: #dbe9ff;--debug-drawer-blocked-fg: #6c7d99;--debug-drawer-hint-fg: #cadcfb;--debug-drawer-warn-fg: #ffdba6;--debug-drawer-apply-fg: #eaf2ff;--draft-badge-border: #ba7a00;--draft-badge-fg: #936100;--draft-badge-bg: #ffe2a3;--font-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Meiryo, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-md: 1.125rem;--font-size-lg: 1.25rem;--font-size-xl: 1.5rem;--font-size-2xl: 1.875rem;--font-size-3xl: 2.25rem;--font-size-4xl: 3rem;--font-size-hero: clamp(2rem, 5vw, 3.5rem);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem;--space-8: 4rem;--space-9: 6rem;--space-10: 8rem;--container: 1200px;--container-pad: clamp(1rem, 5vw, 2rem);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--radius-xl: 24px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--shadow-lg: 0 8px 24px rgba(0,0,0,.12);--shadow-card: 0 0 0 1px rgba(17,20,31,.06), 0 10px 24px rgba(17,20,31,.04)}html.dark-mode{--color-bg: #0d0d1a;--color-surface: #16162a;--color-surface-2: #1e1e35;--color-border: #2a2a42;--color-text: #e8eaf0;--color-text-muted: #9494b2;--color-primary: var(--color-blue-bright);--color-primary-hover: #77aaff;--color-accent: #ff7733;--color-accent-hover: #ff9955;--color-on-primary: var(--color-navy-900);--color-positive: #7fc4a1;--color-error: #ff8a70;--header-bg: #070710;--shadow-card: 0 2px 8px rgba(0,0,0,.3), 0 0 0 1px rgba(255,255,255,.04);--hero-bg-from: #000306;--hero-bg-to: #000b1c;--hero-bg-mid: #000710;--hero-panel-muted: var(--color-on-dark-faint);--playground-bg: #020408}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);font-size:var(--font-size-base);line-height:1.75;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-normal),color var(--transition-normal)}img,video{max-width:100%;height:auto;display:block}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;font-weight:600;letter-spacing:0}h1{font-size:var(--font-size-hero)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-xl)}p{margin:0 0 var(--space-4)}p:last-child{margin-bottom:0}ul,ol{margin:0;padding:0;list-style:none}.container{max-width:var(--container);margin-inline:auto;padding-inline:var(--container-pad)}.section{padding-block:var(--space-9)}.section-label{font-size:var(--font-size-sm);font-weight:500;letter-spacing:.06em;color:var(--color-primary);margin-bottom:var(--space-3)}.section-title{font-size:var(--font-size-3xl);margin-bottom:var(--space-5)}.skip-link{position:absolute;top:-100%;left:var(--space-4);padding:var(--space-2) var(--space-4);background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--radius-md);font-weight:600;z-index:9999;transition:top var(--transition-fast)}.skip-link:focus{top:var(--space-2)}.btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:600;font-family:inherit;border:2px solid transparent;cursor:pointer;text-decoration:none;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background-color:var(--color-primary);color:var(--color-on-primary);border-color:var(--color-primary)}.btn-primary:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover);color:var(--color-on-primary);box-shadow:0 4px 12px #2566d447}.tap-target{display:inline-flex;align-items:center;min-height:2.75rem;min-width:2.75rem;margin-block:calc((1lh - 2.75rem)/2)}.tap-chip{--tap-chip-visual: 1.7rem;position:relative;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;min-height:2.75rem;min-width:2.75rem;margin-block:calc((var(--tap-chip-visual) - 2.75rem) / 2);border:0;background:transparent}.tap-chip:before{content:"";position:absolute;inset:calc((2.75rem - var(--tap-chip-visual)) / 2) 0;border-radius:999px;z-index:-1}.btn-secondary{background-color:transparent;color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover{border-color:var(--color-text-muted);color:var(--color-text)}.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:var(--shadow-card);transition:box-shadow var(--transition-normal),transform var(--transition-normal)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}